A traffic collision occurred today on State Route 57 North near the Sunset Crossing Road on-ramp in Diamond Bar, CA, causing significant disruptions during the morning commute. The incident involved four vehicles, including a black Toyota SUV, a white truck, a blue Toyota, and a pink pickup truck that made contact with an SUV.
Emergency response teams quickly arrived at the scene to manage the situation and facilitate the clearance of the involved lanes. Traffic management efforts included holding all northbound lanes until the scene was stabilized, which resulted in noticeable delays and congestion for motorists in the area.
The traffic incident was reported around 11:20 AM, with emergency units on-site shortly after to address the situation. By approximately 11:57 AM, all vehicles had been cleared from the roadway, allowing traffic to resume its normal flow.
Motorists are advised to remain cautious and aware of potential residual delays as traffic returns to normal. The California Highway Patrol is monitoring the situation to ensure safe travel for all drivers in the vicinity.